Figure 12-20. Uhf (438-470 Mhz) Transmitter And Power Control Schematic Diagram (8486348Z09-A) - Motorola CP150 Service Manual

12-26
TX_ENA
5T
C109 C114
0.1uF 390pF
C103
390pF
+8 dBm
R101 C100 L102
432 mV (RF)
5.6 390pF 3.6nH
TX_INJ
R100 R102 C104 R103
10pF
820 820 3K

Figure 12-20. UHF (438-470 MHz) Transmitter and Power Control Schematic Diagram (8486348Z09-A)

June, 2005
USWB+
R170
100K
7.5 V (RX) 2
0 V (RX)
0 V (TX)
3.3 V (TX)
1
Q170
R171
22K
3
C170
390pF
Q171
C157
0.1uF
R159
0
R158
5.1K
C156
.01uF
4.4 V (Hi)
3.6 V (Lo) (TYP, TX)
8 2
TP150
1
1 3
4
U150-1
LM2904
2.6 V (Hi)
1.8 V (Lo) (TYP, TX)
PWR_SET
R162
10K
L110
220nH
R110
680
C111 R111 C112
R106 R107 L100 390pF 1.3K 0.1uF
4.7K NU 220nH
C102 L103
+18.5 dBm
0.1uF
5.1nH
845 mV (RF)
L101
4.9 V (TX)
220nH
R105
2.7K
1
C105 C107
3.9pF NU
Q100
2
BFG540W
1.38 V (TX)
0.65 V (TX)
C120
NU
R104 C101 C108
18 0.1uF 390pF
SH100
SHIELD
1
7.5V
0 V (RX)
6.8 V (TX)
C154
390pF
R152
100K
R153 1%
100K
C151
1%
390pF
Q150
C150
3
8 6
390pF
1 7
5
R157
4
2
2.2K
R154
100K
U150-2
R155 1%
LM2904 100K
C152 1%
390pF
C159 R156 C153
390pF 330 0.47uF
C158
390pF
C113 C115 C116
390pF 1uF 0.1uF
2.73 V (Hi)
2.32 V (Lo) (TYP, TX)
C171 VR110
390pF NU
DO NOT MEASURE
2 3
C106
+18.7 dBm
390pF
892 mV (RF)
1 4
RFIN RFOUT
D120
C117
390pF MA4PH261
5
C130
U110
RA07M4452M_UHF NU
0.9 V (TX)
0 V (RX)
L121
15nH
D121
C122
5.1pF BAR63-02W
UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A)
U151
57R01
R151
39
R150
0.1
C172
390pF
R120
150
R121 1.7 V (TX)
150
0 V (RX)
C121
390pF
L120
220nH
C131 C133 C135
C137
NU NU NU
220pF
4 S1
L130 L131 L132
17.02nH 17.02nH 17.02nH 3 S2
2 G1
C132 C134 C136
5 G2
6.8pF 6.8pF 4.3pF
1
T1
6
T2
L140
43pF
M140
RX_OUT
ANTENNA_NUT
C124
1
390pF
TAB1
2
NC TAB2
C123
3.9pF
C141 L141
30.54nH
NU
J140
3
TAB3 NC
4
TAB4 NC
6880309N62-C